Extended Data Fig. 1: Bilayer sample characterizes depth selectivity of mµSORS.
From: Subcutaneous depth-selective spectral imaging with mμSORS enables noninvasive glucose monitoring
a, Top view and side view of the Si-tape bilayer sample. b, Raman spectra of the bilayer sample displayed in three dimensions. Shade and box indicate characteristic Raman peaks at 520 cm−1 (Si) and 1041 cm−1 (Scotch tape), respectively. The depth of Si in 15 different phantoms increased from 50 μm to 750 μm with a step of 50 μm. c, Normalized Si (520 cm−1) Raman band intensity varying with its depth for each offset. Error bars indicate mean and standard deviation (SD) over n = 3 measurements. Lines are derived from 9-order polynomial fitting of the measured points.
